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Drill/Tap Guide Makes Engine Work Easier
If you've ever had trouble repairing or re-placing an exhaust manifold on Deere 400 and 500 series engines, you'll like this new drill/tap guide which was introduced at the recent National Farm Machinery Show at Louisville, Ky.
"Often if you have to replace the turbocharger, studs are corroded and break off," explains inventor Vince Jeffries of Jackson-Lee-Pearson Inc., Flora, Ind. "This guide allows you to remove the broken stud by hitting it dead center with the drill bit, avoiding damage to the threads on the manifold. You can even do the work without taking the manifold off. It's a real time and money-saver."
It consists of a metal plate the size of the base of a turbocharger. It has four 3/8-in. holes, corresponding to stud positions on the exhaust manifold. You simply line up the plate on the manifold, bolt it to two unbroken studs, then insert one of three guide sleeves over the broken stud. You choose the sleeve for the job you're doing - drilling, retapping, or installing a helicoil.
Comes with replaceable hardened guides for 5/32-in., 5/16-in., and 25/64-in. drill bits.
Sells for $165 apiece for the Deere series engines plus $5 S&H. (Can also be custom-built for most other engines). Indiana residents add 5% tax where applicable.
Contact: FARM SHOW Followup, Jackson-Lee-Pearson Inc., State Rt. 75 South, Flora, Ind., 46929 (ph 219 967-4164; fax 4230).

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1996 - Volume #20, Issue #2